Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/ma16051928 http://hdl.handle.net/11449/246986 |
Resumo: | In the development of electrochemical sensors, carbon micro-structured or micro-materials have been widely used as supports/modifiers to improve the performance of bare electrodes. In the case of carbon fibers (CFs), these carbonaceous materials have received extensive attention and their use has been proposed in a variety of fields. However, to the best of our knowledge, no attempts for electroanalytical determination of caffeine with CF microelectrode (µE) have been reported in the literature. Therefore, a homemade CF-µE was fabricated, characterized, and used to determine caffeine in soft beverage samples. From the electrochemical characterization of the CF-µE in K3Fe(CN)6 10 mmol L−1 plus KCl 100 mmol L−1, a radius of about 6 µm was estimated, registering a sigmoidal voltammetric profile that distinguishes a µE indicating that the mass-transport conditions were improved. Voltammetric analysis of the electrochemical response of caffeine at the CF-µE clearly showed that no effects were attained due to the mass transport in solution. Differential pulse voltammetric analysis using the CF-µE was able to determine the detection sensitivity, concentration range (0.3 to 4.5 µmol L−1), limit of detection (0.13 μmol L−1) and linear relationship (I (µA) = (11.6 ± 0.09) × 10−3 [caffeine, μmol L−1] − (0.37 ± 0.24) × 10−3), aiming at the quantification applicability in concentration quality-control for the beverages industry. When the homemade CF-µE was used to quantify the caffeine concentration in the soft beverage samples, the values obtained were satisfactory in comparison with the concentrations reported in the literature. Additionally, the concentrations were analytically determined by high-performance liquid chromatography (HPLC). These results show that these electrodes may be an alternative to the development of new and portable reliable analytical tools at low cost with high efficiency. |
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Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beveragesbeveragescaffeinecarbon fibercyclic voltammetrymicroelectrodeIn the development of electrochemical sensors, carbon micro-structured or micro-materials have been widely used as supports/modifiers to improve the performance of bare electrodes. In the case of carbon fibers (CFs), these carbonaceous materials have received extensive attention and their use has been proposed in a variety of fields. However, to the best of our knowledge, no attempts for electroanalytical determination of caffeine with CF microelectrode (µE) have been reported in the literature. Therefore, a homemade CF-µE was fabricated, characterized, and used to determine caffeine in soft beverage samples. From the electrochemical characterization of the CF-µE in K3Fe(CN)6 10 mmol L−1 plus KCl 100 mmol L−1, a radius of about 6 µm was estimated, registering a sigmoidal voltammetric profile that distinguishes a µE indicating that the mass-transport conditions were improved. Voltammetric analysis of the electrochemical response of caffeine at the CF-µE clearly showed that no effects were attained due to the mass transport in solution. Differential pulse voltammetric analysis using the CF-µE was able to determine the detection sensitivity, concentration range (0.3 to 4.5 µmol L−1), limit of detection (0.13 μmol L−1) and linear relationship (I (µA) = (11.6 ± 0.09) × 10−3 [caffeine, μmol L−1] − (0.37 ± 0.24) × 10−3), aiming at the quantification applicability in concentration quality-control for the beverages industry. When the homemade CF-µE was used to quantify the caffeine concentration in the soft beverage samples, the values obtained were satisfactory in comparison with the concentrations reported in the literature. Additionally, the concentrations were analytically determined by high-performance liquid chromatography (HPLC). These results show that these electrodes may be an alternative to the development of new and portable reliable analytical tools at low cost with high efficiency.Institute of Chemistry Federal University of Rio Grande do Norte, Av. Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, RNNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Universidade Estadual Paulista, SPSchool of Science and Technology Federal University of Rio Grande do Norte, Av. Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, RNNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry Universidade Estadual Paulista, SPFederal University of Rio Grande do NorteUniversidade Estadual Paulista (UNESP)de Freitas Araújo, Karla Carolinede Araújo Costa, Emily Cintia Tosside Araújo, Danyelle Medeiros [UNESP]Santos, Elisama V. [UNESP]Martínez-Huitle, Carlos A. [UNESP]Castro, Pollyana Souza2023-07-29T12:55:56Z2023-07-29T12:55:56Z2023-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/ma16051928Materials, v. 16, n. 5, 2023.1996-1944http://hdl.handle.net/11449/24698610.3390/ma160519282-s2.0-85149835017Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterialsinfo:eu-repo/semantics/openAccess2023-07-29T12:55:56Zoai:repositorio.unesp.br:11449/246986Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-07-29T12:55:56Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages |
title |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages |
spellingShingle |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages de Freitas Araújo, Karla Caroline beverages caffeine carbon fiber cyclic voltammetry microelectrode |
title_short |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages |
title_full |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages |
title_fullStr |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages |
title_full_unstemmed |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages |
title_sort |
Probing the Use of Homemade Carbon Fiber Microsensor for Quantifying Caffeine in Soft Beverages |
author |
de Freitas Araújo, Karla Caroline |
author_facet |
de Freitas Araújo, Karla Caroline de Araújo Costa, Emily Cintia Tossi de Araújo, Danyelle Medeiros [UNESP] Santos, Elisama V. [UNESP] Martínez-Huitle, Carlos A. [UNESP] Castro, Pollyana Souza |
author_role |
author |
author2 |
de Araújo Costa, Emily Cintia Tossi de Araújo, Danyelle Medeiros [UNESP] Santos, Elisama V. [UNESP] Martínez-Huitle, Carlos A. [UNESP] Castro, Pollyana Souza |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Federal University of Rio Grande do Norte Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
de Freitas Araújo, Karla Caroline de Araújo Costa, Emily Cintia Tossi de Araújo, Danyelle Medeiros [UNESP] Santos, Elisama V. [UNESP] Martínez-Huitle, Carlos A. [UNESP] Castro, Pollyana Souza |
dc.subject.por.fl_str_mv |
beverages caffeine carbon fiber cyclic voltammetry microelectrode |
topic |
beverages caffeine carbon fiber cyclic voltammetry microelectrode |
description |
In the development of electrochemical sensors, carbon micro-structured or micro-materials have been widely used as supports/modifiers to improve the performance of bare electrodes. In the case of carbon fibers (CFs), these carbonaceous materials have received extensive attention and their use has been proposed in a variety of fields. However, to the best of our knowledge, no attempts for electroanalytical determination of caffeine with CF microelectrode (µE) have been reported in the literature. Therefore, a homemade CF-µE was fabricated, characterized, and used to determine caffeine in soft beverage samples. From the electrochemical characterization of the CF-µE in K3Fe(CN)6 10 mmol L−1 plus KCl 100 mmol L−1, a radius of about 6 µm was estimated, registering a sigmoidal voltammetric profile that distinguishes a µE indicating that the mass-transport conditions were improved. Voltammetric analysis of the electrochemical response of caffeine at the CF-µE clearly showed that no effects were attained due to the mass transport in solution. Differential pulse voltammetric analysis using the CF-µE was able to determine the detection sensitivity, concentration range (0.3 to 4.5 µmol L−1), limit of detection (0.13 μmol L−1) and linear relationship (I (µA) = (11.6 ± 0.09) × 10−3 [caffeine, μmol L−1] − (0.37 ± 0.24) × 10−3), aiming at the quantification applicability in concentration quality-control for the beverages industry. When the homemade CF-µE was used to quantify the caffeine concentration in the soft beverage samples, the values obtained were satisfactory in comparison with the concentrations reported in the literature. Additionally, the concentrations were analytically determined by high-performance liquid chromatography (HPLC). These results show that these electrodes may be an alternative to the development of new and portable reliable analytical tools at low cost with high efficiency. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:55:56Z 2023-07-29T12:55:56Z 2023-03-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3390/ma16051928 Materials, v. 16, n. 5, 2023. 1996-1944 http://hdl.handle.net/11449/246986 10.3390/ma16051928 2-s2.0-85149835017 |
url |
http://dx.doi.org/10.3390/ma16051928 http://hdl.handle.net/11449/246986 |
identifier_str_mv |
Materials, v. 16, n. 5, 2023. 1996-1944 10.3390/ma16051928 2-s2.0-85149835017 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1792961548967215104 |